Question
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Sprinkling Kerosene on still water surface helps in treatment of malaria.
Reason (R) : Kerosene is poisonous to mosquitoes.
In the light of the above statements, choose the most appropriate answer from the options given below :
This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
(A) is not correct but (R) is correct
Kerosene Role in Malaria Prevention
Assertion (A) states that sprinkling kerosene on still water helps in the treatment of malaria. This statement is incorrect. Malaria is a disease treated with medication. Sprinkling kerosene is a method used for mosquito control, specifically targeting breeding sites, which aids in the prevention of malaria, not its treatment.
Kerosene Toxicity to Mosquitoes
Reason (R) claims that kerosene is poisonous to mosquitoes. This statement is correct. Kerosene forms a thin film on the surface of the water. This film reduces the surface tension of the water, making it difficult for mosquito larvae and pupae to breathe. The kerosene film can also directly suffocate them. Therefore, kerosene is toxic to immature stages of mosquitoes, preventing them from developing into adults.
Conclusion
Based on the analysis:
- Assertion (A) is incorrect because kerosene helps in malaria prevention, not treatment.
- Reason (R) is correct as kerosene is toxic to mosquitoes, particularly their larvae and pupae.
Thus, (A) is not correct, but (R) is correct.
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